Ribbon feed mechanism for type writing machines



(No Model.) 2 Sheets+Sheet 1.

G. A. SEIB.

RIBBON FEED MECHANISM FOR TYPE WRITING MACHINE-S.-

No. 590.117. Patented Sept. 14,1897.

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(No Model.) 2 SheetsSheet 2.

G. A. SEIB.

RIBBON FEED MECHANISM FOR TYPE WRITING MACHINES.

Patented Sept. 14, 1897.

INVENTOR ATTORNEYS WITH/E8858 AIRS iinrrnn GEORGE A. snm, on NEW YORK, Y.

SPECIFICATION forming part of Letters Patent No. 590,117, dated September 14, 1897.

Application filed February 20, 1897. Serial No. 624,295. (No modehl To all whom, it may concern:

Be it known that I, GEORGE A. SEIB, of New Yorkcity, in the county and State of New York, haveinvented new and useful Improvements in Ribbon-Feed Mechanism for TypelVriters. of which the following is a full, clear, and exact description.

This invention relates to ribbon-feed mechanism for type-writers; and the object is to provide a mechanism for this purpose which is simple in its construction and wholly free from the key-levers, whereby the amount of finger -pressure required for operating the keys is very much reduced.

I will describe a ribbon-feed mechanism embodying my invention, and then point out the novel features in theappended claims.

Reference is to be had to the accompanying drawings, forming apart of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a sectional elevation of a portion of a typewriter, showing my improvement as applied thereto. Fig. 2 is a'plan view of the mechanism. Fig. 3 is a plan view, drawn on an enlarged scale, of a portion of the impression-rollercarriage. Fig. 4 is a front elevation thereof, and Fig. 5 is an elevation of a rock-shaft employed.

Referring to the drawings, 1 designates the base of the type-writer, and 2 the up per frame thereon. Mounted to move on rods 3 and 4 is an impression-roller carriage 5, supporting the impression-roller 6. These parts inconstruction and operation are well known in the New Franklin type-writer. Therefore a detailed description is not deemed necessary.

plate secured to the upper frame.

On the outer portion of the stud 9 is mounted a sleeve 14, having an upwardly-extcnded arm 15, from which a shaft 16 extends over the ribbon-wheels 10 and 11. Mounted to swing on the shaft 16 is a dog 17, adapted to engage gages.

with ratchet-teeth formed on flanges 18 and 19 at the inner sides of the ribbon-wh eels 10 and 11. This dog is movable longitudinally of the shaft 16, so that it may be placed in engagement witheither one of the flanges 18 or 19. A grooved pulley 20 is rigidly attached to the sleeve 14, and a coiled spring 21 has engagement at one end with this pulley 20 and at the other end with the end of the stud 9 or with the head of a screw engaging therein.

From the pulley 20 a flexible connection 22 extends to a rock-shaft 23, having journalbearings in brackets 24, extended upward and rearward from the base of the machine. As here shown this flexible connection (which may consist of a chain) is engaged at its end with a grooved segment 25, mounted on the rock-shaft 23, whereby a greater range of movement may be obtained than would be.

possible were it connected directly with the rock-shaf t. For the purpose of holding the connection 22 out of the line of movement of certain of the type-levers I extend it under a sheave 26, having journal-bearings in a bracket secured to the arm 7.

Mounted on the frontof the carriage 5 is a rock-shaft-actuating plate 27, with which a finger 28, extended from the rock-shaft, en-

This actuating-plate 27 on its upper side is inclined downward in the direction of the movement of the carriage when operated by the key-levers.

In operation a step'by-step movement of the carriage 5 will move the actuating-plate 27 underneath the finger 28, and of course as this finger 28 reaches the higher planes the rock-shaft 23 will be rocked, operating to draw the flexible connection 22, which by rotating the sleeve 14 will turn one of the ribbon-wheels through the medium of the dog 17. After the carriage shall have reached the limit of its movement it is to be forced back in the ordinary manner, and during this backward movement the spring 21 will rotate the sleeve 14 backward to carry the dog 17 to the rear portion of the ribbon-wheel.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a type-Writer, an impression-roller carriage, a rock-shaft operated by a longitudinal movement of the same, ribbon-Wheels, an arm mounted to rotate independently of the ribbon-Wheels, a dog carried by said arm for engagement with the ribbon-Wheels, and

a connection between the rock-shaftand the sleeve upon Which said arm is mounted, substantially as specified.

2. 111 a type-Writer, an impression-roller carriage, a rock-shaft, an inclined plate carried by the carriage, a finger extended from the rock-shaft and engaging on said plate, a stud extended from an arm on the frame of the machine, ribbon-Wheels mounted to rotate independently on said stud, a sleeve mounted to rotate on said stud, an arm extended from the sleeve, a shaft extended from the arm, a dog mounted on said shaft to engage with the ribbon-Wheels, and a flexible connection between the sleeve and rock-shaft, substantially as specified.

3. In a type-writer an impression-roller extended from said sleeve, a shaft extended 0 from the arm, a dog mounted to swing on the shaft and adapted to engage with the ratchetteeth of either one of the Wheels, a grooved pulley on the sleeve, a flexible connection between said grooved pulley and the segment 35 on the rock-shaft, and a spring for rotating the sleeve to its rearward position, substantially as specified.

GEORGE A. SEIB. \Vitnesses:

JOHN E. \VYMAN, C. R. FERGUSON. 

